Ruby on Rails

Hi

i hava a database tst with attributes d1 and d2

in an array a=["d1","d2"]

to get to the value of tst.d1 i can use

tst.send a[0].to_sym

how can i change the value of d1 in this way ?

something like

tst.send a[0].to_sym = "hello" ??

Thanks

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